Thanks for asking getbiggers this much important question! For starters this woman is what is called obese (30 or more pounds overweight). Actually she is close to being morbidly obese (100lbs overweight). She should wear a sports bra as pictured below, BUT also needs to put a loose fitting t-shirt over it as she is rather unsightly and overweight and nobody wants to look at her. If she was in shape like the girl pictured below, it would be acceptable to wear just the sports bra. And for bottoms she can wear sweat pants, gym shorts (not too short!) or track pants. But please no yoga or other tight fitting pants. Basic rule of thumb is keep covered up in loose clothing when obese. Less fat = less clothes, see how that works?

Thanks for your question, and good luck with the obese woman's training goals!